2002-01-27 14:30:18 +01:00
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/*
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2002-05-26 00:45:33 +02:00
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* MPEG video MMX templates
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*
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* Copyright (c) 2002 Michael Niedermayer <michaelni@gmx.at>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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2002-01-27 14:30:18 +01:00
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#undef SPREADW
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#undef PMAXW
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#ifdef HAVE_MMX2
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#define SPREADW(a) "pshufw $0, " #a ", " #a " \n\t"
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#define PMAXW(a,b) "pmaxsw " #a ", " #b " \n\t"
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#else
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#define SPREADW(a) \
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"punpcklwd " #a ", " #a " \n\t"\
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"punpcklwd " #a ", " #a " \n\t"
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#define PMAXW(a,b) \
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"psubusw " #a ", " #b " \n\t"\
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"paddw " #a ", " #b " \n\t"
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#endif
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static int RENAME(dct_quantize)(MpegEncContext *s,
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DCTELEM *block, int n,
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2002-04-27 14:30:26 +02:00
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int qscale, int *overflow)
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2002-01-27 14:30:18 +01:00
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{
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2002-04-27 14:30:26 +02:00
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int level=0, last_non_zero_p1, q; //=0 is cuz gcc says uninitalized ...
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2003-02-11 17:35:48 +01:00
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const uint16_t *qmat, *bias;
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2003-08-15 21:58:27 +02:00
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__align8 int16_t temp_block[64];
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assert((7&(int)(&temp_block[0])) == 0); //did gcc align it correctly?
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2002-01-27 14:30:18 +01:00
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2002-08-30 01:55:32 +02:00
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//s->fdct (block);
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2003-10-23 15:22:20 +02:00
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RENAMEl(ff_fdct) (block); //cant be anything else ...
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2002-04-27 14:30:26 +02:00
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2003-11-03 00:19:47 +01:00
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if(s->dct_error_sum)
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ff_denoise_dct(s, block);
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2002-01-27 14:30:18 +01:00
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if (s->mb_intra) {
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int dummy;
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if (n < 4)
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2002-09-02 18:56:29 +02:00
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q = s->y_dc_scale;
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2002-01-27 14:30:18 +01:00
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else
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2002-09-02 18:56:29 +02:00
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q = s->c_dc_scale;
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2002-01-27 14:30:18 +01:00
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/* note: block[0] is assumed to be positive */
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2002-05-02 06:39:45 +02:00
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if (!s->h263_aic) {
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2002-01-27 14:30:18 +01:00
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#if 1
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2002-04-27 14:30:26 +02:00
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asm volatile (
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2003-01-19 18:55:13 +01:00
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"imul %%ecx \n\t"
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2002-04-27 14:30:26 +02:00
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: "=d" (level), "=a"(dummy)
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2002-09-02 18:56:29 +02:00
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: "a" ((block[0]>>2) + q), "c" (inverse[q<<1])
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2002-04-27 14:30:26 +02:00
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);
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2002-01-27 14:30:18 +01:00
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#else
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2002-04-27 14:30:26 +02:00
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asm volatile (
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"xorl %%edx, %%edx \n\t"
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"divw %%cx \n\t"
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"movzwl %%ax, %%eax \n\t"
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: "=a" (level)
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2002-09-02 18:56:29 +02:00
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: "a" ((block[0]>>2) + q), "c" (q<<1)
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2002-04-27 14:30:26 +02:00
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: "%edx"
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);
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2002-01-27 14:30:18 +01:00
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#endif
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2002-05-02 06:39:45 +02:00
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} else
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/* For AIC we skip quant/dequant of INTRADC */
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2002-09-02 18:56:29 +02:00
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level = (block[0] + 4)>>3;
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2002-05-02 06:39:45 +02:00
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2002-04-27 14:30:26 +02:00
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block[0]=0; //avoid fake overflow
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2002-01-27 14:30:18 +01:00
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// temp_block[0] = (block[0] + (q >> 1)) / q;
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last_non_zero_p1 = 1;
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2003-10-22 13:23:39 +02:00
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bias = s->q_intra_matrix16[qscale][1];
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qmat = s->q_intra_matrix16[qscale][0];
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2002-01-27 14:30:18 +01:00
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} else {
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last_non_zero_p1 = 0;
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2003-10-22 13:23:39 +02:00
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bias = s->q_inter_matrix16[qscale][1];
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qmat = s->q_inter_matrix16[qscale][0];
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2002-01-27 14:30:18 +01:00
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}
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2002-08-07 01:51:15 +02:00
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if(s->out_format == FMT_H263 && s->mpeg_quant==0){
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2003-05-13 10:21:35 +02:00
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2002-04-27 14:30:26 +02:00
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asm volatile(
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"movd %%eax, %%mm3 \n\t" // last_non_zero_p1
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SPREADW(%%mm3)
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"pxor %%mm7, %%mm7 \n\t" // 0
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"pxor %%mm4, %%mm4 \n\t" // 0
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2003-05-13 10:21:35 +02:00
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"movq (%2), %%mm5 \n\t" // qmat[0]
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2002-04-27 14:30:26 +02:00
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"pxor %%mm6, %%mm6 \n\t"
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2003-05-13 10:21:35 +02:00
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"psubw (%3), %%mm6 \n\t" // -bias[0]
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2002-04-27 14:30:26 +02:00
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"movl $-128, %%eax \n\t"
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".balign 16 \n\t"
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"1: \n\t"
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"pxor %%mm1, %%mm1 \n\t" // 0
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"movq (%1, %%eax), %%mm0 \n\t" // block[i]
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"pcmpgtw %%mm0, %%mm1 \n\t" // block[i] <= 0 ? 0xFF : 0x00
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"pxor %%mm1, %%mm0 \n\t"
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"psubw %%mm1, %%mm0 \n\t" // ABS(block[i])
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"psubusw %%mm6, %%mm0 \n\t" // ABS(block[i]) + bias[0]
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"pmulhw %%mm5, %%mm0 \n\t" // (ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16
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"por %%mm0, %%mm4 \n\t"
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"pxor %%mm1, %%mm0 \n\t"
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"psubw %%mm1, %%mm0 \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
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2003-05-13 10:21:35 +02:00
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"movq %%mm0, (%5, %%eax) \n\t"
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2002-04-27 14:30:26 +02:00
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"pcmpeqw %%mm7, %%mm0 \n\t" // out==0 ? 0xFF : 0x00
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2003-05-13 10:21:35 +02:00
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"movq (%4, %%eax), %%mm1 \n\t"
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2002-04-27 14:30:26 +02:00
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"movq %%mm7, (%1, %%eax) \n\t" // 0
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"pandn %%mm1, %%mm0 \n\t"
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PMAXW(%%mm0, %%mm3)
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"addl $8, %%eax \n\t"
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" js 1b \n\t"
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"movq %%mm3, %%mm0 \n\t"
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"psrlq $32, %%mm3 \n\t"
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PMAXW(%%mm0, %%mm3)
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"movq %%mm3, %%mm0 \n\t"
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"psrlq $16, %%mm3 \n\t"
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PMAXW(%%mm0, %%mm3)
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"movd %%mm3, %%eax \n\t"
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"movzbl %%al, %%eax \n\t" // last_non_zero_p1
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2003-05-13 10:21:35 +02:00
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: "+a" (last_non_zero_p1)
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: "r" (block+64), "r" (qmat), "r" (bias),
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"r" (inv_zigzag_direct16+64), "r" (temp_block+64)
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);
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// note the asm is split cuz gcc doesnt like that many operands ...
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asm volatile(
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"movd %1, %%mm1 \n\t" // max_qcoeff
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2002-04-27 14:30:26 +02:00
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SPREADW(%%mm1)
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"psubusw %%mm1, %%mm4 \n\t"
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"packuswb %%mm4, %%mm4 \n\t"
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2003-05-13 10:21:35 +02:00
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"movd %%mm4, %0 \n\t" // *overflow
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: "=g" (*overflow)
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: "g" (s->max_qcoeff)
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);
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2002-04-27 14:30:26 +02:00
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}else{ // FMT_H263
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asm volatile(
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2003-05-13 10:21:35 +02:00
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"movd %%eax, %%mm3 \n\t" // last_non_zero_p1
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2002-04-27 14:30:26 +02:00
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SPREADW(%%mm3)
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"pxor %%mm7, %%mm7 \n\t" // 0
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"pxor %%mm4, %%mm4 \n\t" // 0
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2003-05-13 10:21:35 +02:00
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"movl $-128, %%eax \n\t"
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2002-04-27 14:30:26 +02:00
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".balign 16 \n\t"
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"1: \n\t"
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"pxor %%mm1, %%mm1 \n\t" // 0
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2003-05-13 10:21:35 +02:00
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"movq (%1, %%eax), %%mm0 \n\t" // block[i]
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2002-04-27 14:30:26 +02:00
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"pcmpgtw %%mm0, %%mm1 \n\t" // block[i] <= 0 ? 0xFF : 0x00
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"pxor %%mm1, %%mm0 \n\t"
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"psubw %%mm1, %%mm0 \n\t" // ABS(block[i])
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2003-05-13 10:21:35 +02:00
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"movq (%3, %%eax), %%mm6 \n\t" // bias[0]
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2002-04-27 14:30:26 +02:00
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"paddusw %%mm6, %%mm0 \n\t" // ABS(block[i]) + bias[0]
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2003-05-13 10:21:35 +02:00
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"movq (%2, %%eax), %%mm5 \n\t" // qmat[i]
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2002-04-27 14:30:26 +02:00
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"pmulhw %%mm5, %%mm0 \n\t" // (ABS(block[i])*qmat[0] + bias[0]*qmat[0])>>16
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"por %%mm0, %%mm4 \n\t"
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"pxor %%mm1, %%mm0 \n\t"
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"psubw %%mm1, %%mm0 \n\t" // out=((ABS(block[i])*qmat[0] - bias[0]*qmat[0])>>16)*sign(block[i])
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2003-05-13 10:21:35 +02:00
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"movq %%mm0, (%5, %%eax) \n\t"
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2002-04-27 14:30:26 +02:00
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"pcmpeqw %%mm7, %%mm0 \n\t" // out==0 ? 0xFF : 0x00
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2003-05-13 10:21:35 +02:00
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"movq (%4, %%eax), %%mm1 \n\t"
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"movq %%mm7, (%1, %%eax) \n\t" // 0
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2002-04-27 14:30:26 +02:00
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"pandn %%mm1, %%mm0 \n\t"
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PMAXW(%%mm0, %%mm3)
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2003-05-13 10:21:35 +02:00
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"addl $8, %%eax \n\t"
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2002-04-27 14:30:26 +02:00
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" js 1b \n\t"
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"movq %%mm3, %%mm0 \n\t"
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"psrlq $32, %%mm3 \n\t"
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PMAXW(%%mm0, %%mm3)
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"movq %%mm3, %%mm0 \n\t"
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"psrlq $16, %%mm3 \n\t"
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PMAXW(%%mm0, %%mm3)
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2003-05-13 10:21:35 +02:00
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"movd %%mm3, %%eax \n\t"
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"movzbl %%al, %%eax \n\t" // last_non_zero_p1
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: "+a" (last_non_zero_p1)
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: "r" (block+64), "r" (qmat+64), "r" (bias+64),
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2002-04-27 14:30:26 +02:00
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"r" (inv_zigzag_direct16+64), "r" (temp_block+64)
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);
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// note the asm is split cuz gcc doesnt like that many operands ...
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asm volatile(
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"movd %1, %%mm1 \n\t" // max_qcoeff
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SPREADW(%%mm1)
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"psubusw %%mm1, %%mm4 \n\t"
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"packuswb %%mm4, %%mm4 \n\t"
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"movd %%mm4, %0 \n\t" // *overflow
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2003-05-13 10:21:35 +02:00
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: "=g" (*overflow)
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: "g" (s->max_qcoeff)
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2002-04-27 14:30:26 +02:00
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);
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}
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2002-09-30 00:44:22 +02:00
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if(s->mb_intra) block[0]= level;
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else block[0]= temp_block[0];
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2003-03-03 15:54:00 +01:00
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if(s->dsp.idct_permutation_type == FF_SIMPLE_IDCT_PERM){
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2002-09-30 00:44:22 +02:00
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if(last_non_zero_p1 <= 1) goto end;
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block[0x08] = temp_block[0x01]; block[0x10] = temp_block[0x08];
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block[0x20] = temp_block[0x10];
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if(last_non_zero_p1 <= 4) goto end;
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block[0x18] = temp_block[0x09]; block[0x04] = temp_block[0x02];
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block[0x09] = temp_block[0x03];
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if(last_non_zero_p1 <= 7) goto end;
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block[0x14] = temp_block[0x0A]; block[0x28] = temp_block[0x11];
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block[0x12] = temp_block[0x18]; block[0x02] = temp_block[0x20];
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if(last_non_zero_p1 <= 11) goto end;
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block[0x1A] = temp_block[0x19]; block[0x24] = temp_block[0x12];
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block[0x19] = temp_block[0x0B]; block[0x01] = temp_block[0x04];
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block[0x0C] = temp_block[0x05];
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if(last_non_zero_p1 <= 16) goto end;
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block[0x11] = temp_block[0x0C]; block[0x29] = temp_block[0x13];
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block[0x16] = temp_block[0x1A]; block[0x0A] = temp_block[0x21];
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block[0x30] = temp_block[0x28]; block[0x22] = temp_block[0x30];
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block[0x38] = temp_block[0x29]; block[0x06] = temp_block[0x22];
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if(last_non_zero_p1 <= 24) goto end;
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block[0x1B] = temp_block[0x1B]; block[0x21] = temp_block[0x14];
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block[0x1C] = temp_block[0x0D]; block[0x05] = temp_block[0x06];
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block[0x0D] = temp_block[0x07]; block[0x15] = temp_block[0x0E];
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block[0x2C] = temp_block[0x15]; block[0x13] = temp_block[0x1C];
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if(last_non_zero_p1 <= 32) goto end;
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block[0x0B] = temp_block[0x23]; block[0x34] = temp_block[0x2A];
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block[0x2A] = temp_block[0x31]; block[0x32] = temp_block[0x38];
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block[0x3A] = temp_block[0x39]; block[0x26] = temp_block[0x32];
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block[0x39] = temp_block[0x2B]; block[0x03] = temp_block[0x24];
|
|
|
|
|
if(last_non_zero_p1 <= 40) goto end;
|
|
|
|
|
block[0x1E] = temp_block[0x1D]; block[0x25] = temp_block[0x16];
|
|
|
|
|
block[0x1D] = temp_block[0x0F]; block[0x2D] = temp_block[0x17];
|
|
|
|
|
block[0x17] = temp_block[0x1E]; block[0x0E] = temp_block[0x25];
|
|
|
|
|
block[0x31] = temp_block[0x2C]; block[0x2B] = temp_block[0x33];
|
|
|
|
|
if(last_non_zero_p1 <= 48) goto end;
|
|
|
|
|
block[0x36] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
|
|
|
|
|
block[0x23] = temp_block[0x34]; block[0x3C] = temp_block[0x2D];
|
|
|
|
|
block[0x07] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
|
|
|
|
|
block[0x0F] = temp_block[0x27]; block[0x35] = temp_block[0x2E];
|
|
|
|
|
if(last_non_zero_p1 <= 56) goto end;
|
|
|
|
|
block[0x2E] = temp_block[0x35]; block[0x33] = temp_block[0x3C];
|
|
|
|
|
block[0x3E] = temp_block[0x3D]; block[0x27] = temp_block[0x36];
|
|
|
|
|
block[0x3D] = temp_block[0x2F]; block[0x2F] = temp_block[0x37];
|
|
|
|
|
block[0x37] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
|
2003-03-03 15:54:00 +01:00
|
|
|
}else if(s->dsp.idct_permutation_type == FF_LIBMPEG2_IDCT_PERM){
|
2002-09-30 00:44:22 +02:00
|
|
|
if(last_non_zero_p1 <= 1) goto end;
|
|
|
|
|
block[0x04] = temp_block[0x01];
|
|
|
|
|
block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
|
|
|
|
|
if(last_non_zero_p1 <= 4) goto end;
|
|
|
|
|
block[0x0C] = temp_block[0x09]; block[0x01] = temp_block[0x02];
|
|
|
|
|
block[0x05] = temp_block[0x03];
|
|
|
|
|
if(last_non_zero_p1 <= 7) goto end;
|
|
|
|
|
block[0x09] = temp_block[0x0A]; block[0x14] = temp_block[0x11];
|
|
|
|
|
block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
|
|
|
|
|
if(last_non_zero_p1 <= 11) goto end;
|
|
|
|
|
block[0x1C] = temp_block[0x19];
|
|
|
|
|
block[0x11] = temp_block[0x12]; block[0x0D] = temp_block[0x0B];
|
|
|
|
|
block[0x02] = temp_block[0x04]; block[0x06] = temp_block[0x05];
|
|
|
|
|
if(last_non_zero_p1 <= 16) goto end;
|
|
|
|
|
block[0x0A] = temp_block[0x0C]; block[0x15] = temp_block[0x13];
|
|
|
|
|
block[0x19] = temp_block[0x1A]; block[0x24] = temp_block[0x21];
|
|
|
|
|
block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
|
|
|
|
|
block[0x2C] = temp_block[0x29]; block[0x21] = temp_block[0x22];
|
|
|
|
|
if(last_non_zero_p1 <= 24) goto end;
|
|
|
|
|
block[0x1D] = temp_block[0x1B]; block[0x12] = temp_block[0x14];
|
|
|
|
|
block[0x0E] = temp_block[0x0D]; block[0x03] = temp_block[0x06];
|
|
|
|
|
block[0x07] = temp_block[0x07]; block[0x0B] = temp_block[0x0E];
|
|
|
|
|
block[0x16] = temp_block[0x15]; block[0x1A] = temp_block[0x1C];
|
|
|
|
|
if(last_non_zero_p1 <= 32) goto end;
|
|
|
|
|
block[0x25] = temp_block[0x23]; block[0x29] = temp_block[0x2A];
|
|
|
|
|
block[0x34] = temp_block[0x31]; block[0x38] = temp_block[0x38];
|
|
|
|
|
block[0x3C] = temp_block[0x39]; block[0x31] = temp_block[0x32];
|
|
|
|
|
block[0x2D] = temp_block[0x2B]; block[0x22] = temp_block[0x24];
|
|
|
|
|
if(last_non_zero_p1 <= 40) goto end;
|
|
|
|
|
block[0x1E] = temp_block[0x1D]; block[0x13] = temp_block[0x16];
|
|
|
|
|
block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
|
|
|
|
|
block[0x1B] = temp_block[0x1E]; block[0x26] = temp_block[0x25];
|
|
|
|
|
block[0x2A] = temp_block[0x2C]; block[0x35] = temp_block[0x33];
|
|
|
|
|
if(last_non_zero_p1 <= 48) goto end;
|
|
|
|
|
block[0x39] = temp_block[0x3A]; block[0x3D] = temp_block[0x3B];
|
|
|
|
|
block[0x32] = temp_block[0x34]; block[0x2E] = temp_block[0x2D];
|
|
|
|
|
block[0x23] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
|
|
|
|
|
block[0x27] = temp_block[0x27]; block[0x2B] = temp_block[0x2E];
|
|
|
|
|
if(last_non_zero_p1 <= 56) goto end;
|
|
|
|
|
block[0x36] = temp_block[0x35]; block[0x3A] = temp_block[0x3C];
|
|
|
|
|
block[0x3E] = temp_block[0x3D]; block[0x33] = temp_block[0x36];
|
|
|
|
|
block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
|
|
|
|
|
block[0x3B] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
|
|
|
|
|
}else{
|
|
|
|
|
if(last_non_zero_p1 <= 1) goto end;
|
|
|
|
|
block[0x01] = temp_block[0x01];
|
|
|
|
|
block[0x08] = temp_block[0x08]; block[0x10] = temp_block[0x10];
|
|
|
|
|
if(last_non_zero_p1 <= 4) goto end;
|
|
|
|
|
block[0x09] = temp_block[0x09]; block[0x02] = temp_block[0x02];
|
|
|
|
|
block[0x03] = temp_block[0x03];
|
|
|
|
|
if(last_non_zero_p1 <= 7) goto end;
|
|
|
|
|
block[0x0A] = temp_block[0x0A]; block[0x11] = temp_block[0x11];
|
|
|
|
|
block[0x18] = temp_block[0x18]; block[0x20] = temp_block[0x20];
|
|
|
|
|
if(last_non_zero_p1 <= 11) goto end;
|
|
|
|
|
block[0x19] = temp_block[0x19];
|
|
|
|
|
block[0x12] = temp_block[0x12]; block[0x0B] = temp_block[0x0B];
|
|
|
|
|
block[0x04] = temp_block[0x04]; block[0x05] = temp_block[0x05];
|
|
|
|
|
if(last_non_zero_p1 <= 16) goto end;
|
|
|
|
|
block[0x0C] = temp_block[0x0C]; block[0x13] = temp_block[0x13];
|
|
|
|
|
block[0x1A] = temp_block[0x1A]; block[0x21] = temp_block[0x21];
|
|
|
|
|
block[0x28] = temp_block[0x28]; block[0x30] = temp_block[0x30];
|
|
|
|
|
block[0x29] = temp_block[0x29]; block[0x22] = temp_block[0x22];
|
|
|
|
|
if(last_non_zero_p1 <= 24) goto end;
|
|
|
|
|
block[0x1B] = temp_block[0x1B]; block[0x14] = temp_block[0x14];
|
|
|
|
|
block[0x0D] = temp_block[0x0D]; block[0x06] = temp_block[0x06];
|
|
|
|
|
block[0x07] = temp_block[0x07]; block[0x0E] = temp_block[0x0E];
|
|
|
|
|
block[0x15] = temp_block[0x15]; block[0x1C] = temp_block[0x1C];
|
|
|
|
|
if(last_non_zero_p1 <= 32) goto end;
|
|
|
|
|
block[0x23] = temp_block[0x23]; block[0x2A] = temp_block[0x2A];
|
|
|
|
|
block[0x31] = temp_block[0x31]; block[0x38] = temp_block[0x38];
|
|
|
|
|
block[0x39] = temp_block[0x39]; block[0x32] = temp_block[0x32];
|
|
|
|
|
block[0x2B] = temp_block[0x2B]; block[0x24] = temp_block[0x24];
|
|
|
|
|
if(last_non_zero_p1 <= 40) goto end;
|
|
|
|
|
block[0x1D] = temp_block[0x1D]; block[0x16] = temp_block[0x16];
|
|
|
|
|
block[0x0F] = temp_block[0x0F]; block[0x17] = temp_block[0x17];
|
|
|
|
|
block[0x1E] = temp_block[0x1E]; block[0x25] = temp_block[0x25];
|
|
|
|
|
block[0x2C] = temp_block[0x2C]; block[0x33] = temp_block[0x33];
|
|
|
|
|
if(last_non_zero_p1 <= 48) goto end;
|
|
|
|
|
block[0x3A] = temp_block[0x3A]; block[0x3B] = temp_block[0x3B];
|
|
|
|
|
block[0x34] = temp_block[0x34]; block[0x2D] = temp_block[0x2D];
|
|
|
|
|
block[0x26] = temp_block[0x26]; block[0x1F] = temp_block[0x1F];
|
|
|
|
|
block[0x27] = temp_block[0x27]; block[0x2E] = temp_block[0x2E];
|
|
|
|
|
if(last_non_zero_p1 <= 56) goto end;
|
|
|
|
|
block[0x35] = temp_block[0x35]; block[0x3C] = temp_block[0x3C];
|
|
|
|
|
block[0x3D] = temp_block[0x3D]; block[0x36] = temp_block[0x36];
|
|
|
|
|
block[0x2F] = temp_block[0x2F]; block[0x37] = temp_block[0x37];
|
|
|
|
|
block[0x3E] = temp_block[0x3E]; block[0x3F] = temp_block[0x3F];
|
|
|
|
|
}
|
|
|
|
|
end:
|
2002-01-27 14:30:18 +01:00
|
|
|
/*
|
|
|
|
|
for(i=0; i<last_non_zero_p1; i++)
|
|
|
|
|
{
|
|
|
|
|
int j= zigzag_direct_noperm[i];
|
|
|
|
|
block[block_permute_op(j)]= temp_block[j];
|
|
|
|
|
}
|
|
|
|
|
*/
|
2002-04-27 14:30:26 +02:00
|
|
|
|
2002-01-27 14:30:18 +01:00
|
|
|
return last_non_zero_p1 - 1;
|
|
|
|
|
}
|
